Supermicro 440LX, Reference Manual

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2-8
BIOS User's Manual
SDRAM Autosizing Support
If the Serial Presence Detect (SPD) is not available, then the BIOS
will try to detect the memory and do the autosizing. The settings
for this option are Auto, Enabled or Disabled.
EDO DRAM Speed (ns)
This option should be set according to the speed of the EDO
DRAM in the system. The value of this option determines how the
EDO DRAM timings should be programmed in the chipset. The
settings for this option are Auto, Manual, 50, 60 or 70.
EDO Read Burst Timing
Burst mode EDO have internal column counters. Because of this,
they do not need to accept row addresses and starting column
addresses from the EDO memory controller. This eliminates the
setup and hold time for the second and subsequent column
addresses. It also improves the EDO Read access time. The
settings for this option are x333 or x222.
EDO Write Burst Timing
Burst mode EDO have internal column counters. Because of this,
they do not need to accept row addresses and starting column
addresses from the EDO memory controller. This eliminates the
setup and hold time for the second and subsequent column
addresses. It also improves the EDO Write access time. The
settings for this option are x333 or x222.
EDO RAS Precharge
Memory needs to be recharged to ensure the information stored
is not lost. This feature eliminates the RAS (Row Address
Strobe) recharge time since memory must always be addressed
in the order of Row first, then Column. The settings for this
option are 4 Clks or 3 Clks.
EDO RAS to CAS
As previously described, memory must always be addressed in
the order of Row, then Column. The EDO RAS to CAS feature
sets the timing delay between Row addressing and Column
addressing. The settings for this option are 3 Clks or 2 Clks.
MA Waitstate
Use this feature to configure the memory address wait state. The
settings for this option are Slow or Fast.